The Origin Helmet is your essential ally for your outings, its construction is done in the IN-MOLD method. The inner part is made of polystyrene (EPS) for impact absorption. The chin guard of the helmet is removable, it has 23 ventilation holes. The size regulation is done through the Boa Fit System which is the dial located at the back of the helmet. The visor is adjustable. It has a quick-drying interior padding, is removable and washable. The retention system is adjustable, the closure is an adjustable buckle. It has three certificates, ASTM 1952, CPSC and CE EN 1078.Referencia: HB0303